There is an increase in alpha motor neuron efferent impulse, it can make ()
A. muscle spindle afferent impulse increase
B. extrafusal muscle contract
C. intrafusal muscle contract
D. extrafusal and intrafusal muscle co-contract
E. gamma motor neuron efferent impulse increase
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The conduction of excitement on each fiber of nerve trunk doesn’t disturb each other, which is called ()
A. physiological integrity
B. relative infatigability
C. bidirectional conduction
D. insulativity
E. unattenuated conduction
The reason that the patient with poliomyelitis appears limb muscle atrophy is ()
A. muscle damaged by the virus
B. loss of nerve impulse affecting to muscle
C. loss of motor function of muscle
D. loss of trophic action of motor nerve to muscle
E. blood flow decrease due to paralysis of the muscle
Which one is non-synaptic chemical transmission? ()
A. electrical synapse
B. classical synapse
C. varicosity
D. gap junction
E. neuromuscular junction
Which can inhibit the release of transmitters? ()
A. organophosphor
B. tetanus toxin
C. neostigmine
D. α-bungarotoxin
E. tubocurarine
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